Adaptor and method for converting standard tube fitting/port to push-to-connect tube fitting/port

US7914050B2 · kind B2 · utility

Assignee

• Parker-Hannifin Corporation · US

Inventors

• Andreas Udhöfer · Gütersloh, DE
• Dieter Ehrke · Bielefeld, DE
• Hiralal V. Patel · Dublin, US
• Kenneth P. Girod · Highland Heights, US
• Luis Moreiras · Willoughby, US
• Andreas Weil · Mentor, US
• Le Yu · Beijing, CN

Key dates

• Filing date: Jul 21, 2005
• Grant date: Mar 29, 2011
• Expiry date: Jul 17, 2027

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L37/0887
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An adaptor (45) for converting to a push-to-connect tube fitting/port a standard tube fitting/port body (10, 110, 210, 310, 410, 510, 610) having a threaded portion (11) for threaded attachment of a nut/plug (12), comprises a coupling nut/plug (12, 112, 212, 312, 412, 512, 612) having an axially inner threaded end portion for threaded attachment to the threaded portion (11) of the fitting/port body (10); a tube sealing member (15, 115, 215, 315, 415, 515, 615) contained within the nut/plug (12) for sealing to a tube (19) having a locking surface (22) spaced from the end of the tube (19); and a retention device (23) retained in the nut/plug (12), which nut/plug (12) has at an axially outer end thereof a central opening through which the tube (19) can be inserted into the coupling nut/plug (12), whereby the locking surface (22) can be engaged by the retention device (23) to prevent axial withdrawal of the tube (19) from the coupling nut/plug (12) once inserted; wherein sealing and retention of the tube (19) is effected within the confines of the coupling nut/plug (12) and separate from and without requiring modification of the standard tube fitting/port body (10).